1// Copyright 2015 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "base/trace_event/memory_allocator_dump_guid.h"
6
7#include "base/format_macros.h"
8#include "base/sha1.h"
9#include "base/strings/stringprintf.h"
10
11namespace base {
12namespace trace_event {
13
14namespace {
15uint64_t HashString(const std::string& str) {
16  uint64_t hash[(kSHA1Length + sizeof(uint64_t) - 1) / sizeof(uint64_t)] = {0};
17  SHA1HashBytes(reinterpret_cast<const unsigned char*>(str.data()), str.size(),
18                reinterpret_cast<unsigned char*>(hash));
19  return hash[0];
20}
21}  // namespace
22
23MemoryAllocatorDumpGuid::MemoryAllocatorDumpGuid(uint64_t guid) : guid_(guid) {}
24
25MemoryAllocatorDumpGuid::MemoryAllocatorDumpGuid()
26    : MemoryAllocatorDumpGuid(0u) {
27}
28
29MemoryAllocatorDumpGuid::MemoryAllocatorDumpGuid(const std::string& guid_str)
30    : MemoryAllocatorDumpGuid(HashString(guid_str)) {
31}
32
33std::string MemoryAllocatorDumpGuid::ToString() const {
34  return StringPrintf("%" PRIx64, guid_);
35}
36
37}  // namespace trace_event
38}  // namespace base
39